Alert archive / North Dakota / Tornado Watches in 2007

Tornado Watch 354

June 6, 20077 counties in Montana; 26 counties in North Dakota; 4 counties in South Dakota

The Storm Prediction Center issued this tornado watch at Jun 6, 2007, 5:47 PM MDT for 7 counties in Montana; 26 counties in North Dakota; 4 counties in South Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 6, 2007, 5:47 PM MDT (23:47 UTC)
Expired
Jun 7, 2007, 1:00 AM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 37 counties

Carter County, MT, Custer County, MT, Dawson County, MT, Fallon County, MT, Prairie County, MT, Richland County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Burleigh County, ND, Dickey County, ND, Dunn County, ND, Emmons County, ND, Foster County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Stutsman County, ND, Wells County, ND, Butte County, SD, Harding County, SD, Meade County, SD, Perkins County, SD

The radar

The Bismarck radar (KBIS), 187 km from the middle of the area, began a volume at 23:48 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 6, 6:06 PM MDTSevere Thunderstorm WarningBISBowman, Slope54 min
Jun 6, 6:06 PM MDTSevere Thunderstorm WarningUNRMeade54 min
Jun 6, 6:18 PM MDTSevere Thunderstorm WarningUNRHarding57 min
Jun 6, 6:30 PM MDTFlash Flood WarningBYZCarter6 hr
Jun 6, 7:00 PM MDTSevere Thunderstorm WarningBISBowman45 min
Jun 6, 7:12 PM MDTFlash Flood WarningBYZCuster, Rosebud6 hr
Jun 6, 8:29 PM MDTFlash Flood WarningBYZCuster, Rosebud4 hr
Jun 6, 8:32 PM MDTSevere Thunderstorm WarningBISEmmons58 min
Jun 6, 8:34 PM MDTSevere Thunderstorm WarningBISGrant, Sioux56 min
Jun 6, 8:59 PM MDTFlash Flood WarningGGWPrairie3 hr
Jun 6, 9:11 PM MDTFlash Flood WarningBYZFallon3 hr
Jun 6, 9:28 PM MDTSevere Thunderstorm WarningBISMorton51 min
Jun 6, 9:33 PM MDTSevere Thunderstorm WarningBISKidder, Logan42 min
Jun 6, 9:47 PM MDTSevere Thunderstorm WarningBISBurleigh, Kidder43 min
Jun 6, 11:37 PM MDTSevere Thunderstorm WarningBISFoster, Stutsman38 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.8 hours before the alert went out and 191 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2007-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2007-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
12 J/kg
Mixed-layer CIN
-394 J/kg
Mixed-layer LCL
848 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 6, 1:28 AM MDTMesoscale DiscussionSPCRichland, Roosevelt, Sheridan92 min
Jun 6, 11:36 AM MDTMesoscale DiscussionSPCCarter, Powder River114 min
Jun 6, 12:04 PM MDTTornado WatchSPCBig Horn, Carter, Custer, Fallon, Powder River, Rosebud6 hr
Jun 6, 5:19 PM MDTMesoscale DiscussionSPCBig Horn, Carter, Custer, Fallon, Powder River, Rosebud26 min
Jun 6, 5:09 PM MDTMesoscale DiscussionSPCAdams, Billings, Bowman, Burleigh, Dickey, Dunn and 19 more2 hr
Jun 5, 6:22 PM MDTMesoscale DiscussionSPCBennett, Butte, Custer, Fall River, Jackson, Lawrence and 3 more113 min
Jun 5, 10:47 PM MDTMesoscale DiscussionSPCBuffalo, Corson, Dewey, Hughes, Hyde, Jones and 9 more88 min
Jun 6, 2:31 PM MDTMesoscale DiscussionSPCBennett, Buffalo, Haakon, Hand, Hughes, Hyde and 9 more119 min
Jun 6, 2:45 PM MDTTornado WatchSPCBennett, Brule, Buffalo, Campbell, Corson, Dewey and 19 more7 hr
Jun 6, 5:56 PM MDTMesoscale DiscussionSPCAurora, Beadle, Bennett, Bon Homme, Brule, Buffalo and 28 more2 hr

Nearby

Tornado Watches in North Dakota, 2007Tornado Watches in Montana, 2007Tornado Watches in South Dakota, 2007Every tornado watch in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.